20867-15-6

Upstream product

• 64-18-6 formic acid 
• 387-79-1 17-Hydroxypregnenolone 
• 974-23-2 3β-hydroxy-16α,17α-epoxypregn-5-en-20-one 
• 14072-39-0 16β-bromo-3β,17α-dihydroxypregn-5-ene-20-one 

Downstream Products

• 83984-86-5 17-acetoxy-3β-formyloxy-pregn-5-en-20-one 
• 26013-88-7 17-(4-chloro-phenylcarbamoyloxy)-3β-formyloxy-pregn-5-en-20-one 
• 26033-88-5 3'-(2-chloro-phenyl)-3β-formyloxy-4'ξ-hydroxy-4'ξ-methyl-(17αO,5'rC¹⁶)-spiro[androst-5-ene-17,5'-oxazolidin]-2'-one 
• 26013-87-6 3β-formyloxy-17-phenylcarbamoyloxy-pregn-5-en-20-one 
• 26033-87-4 3β-formyloxy-4'ξ-hydroxy-4'ξ-methyl-3'-phenyl-(17αO,5'rC¹⁶)-spiro[androst-5-ene-17,5'-oxazolidin]-2'-one 
• 26033-92-1 3β-formyloxy-4'ξ-hydroxy-4'ξ-methyl-3'-p-tolyl-(17αO,5'rC¹⁶)-spiro[androst-5-ene-17,5'-oxazolidin]-2'-one 
• 25996-14-9 3β-formyloxy-17-p-tolylcarbamoyloxy-pregn-5-en-20-one 
• 26033-90-9 3β-formyloxy-4'ξ-hydroxy-4'ξ-methyl-3'-o-tolyl-(17αO,5'rC¹⁶)-spiro[androst-5-ene-17,5'-oxazolidin]-2'-one 
• 26033-89-6 3'-(3-chloro-phenyl)-3β-formyloxy-4'ξ-hydroxy-4'ξ-methyl-(17αO,5'rC¹⁶)-spiro[androst-5-ene-17,5'-oxazolidin]-2'-one 
• 28417-54-1 3β-formyloxy-17-m-tolylcarbamoyloxy-pregn-5-en-20-one 
• 25996-15-0 17-(3-chloro-phenylcarbamoyloxy)-3β-formyloxy-pregn-5-en-20-one 
• 68-96-2 17-hydroxyprogesterone 
• 4134-58-1 hydroxyprogesterone acetate 
• 1807-14-3 17α,21-dihydroxypregna-1,4-diene-3,20-dione 

Relevant academic research and scientific papers

Further syntheses of cyproterone acetate

The present invention relates to improved methods for synthesising cyproterone acetate (17α-Acetoxy-6-chloro-1α, 2α-methylene-4,6-pregnadiene-3,20-dione) from solasodine. The methods of the invention are shorter as those of the prior art and therefore more economic.